AIRCRAFT AVIONICS SYSTEMS
EXAM 2025 QUESTIONS AND
ANSWERS
Two types of fields exist in a radio transmitting antenna to cause it to
radiate electrical energy. They are: - ....ANSWER ...-An electric
field, A magnetic field
The higher the frequency, the_______ the wavelength. -
....ANSWER ...-Shorter
The frequency of a radio transmission indicates the number of
electromagnetic field_______ that occur in_____ second. -
....ANSWER ...-Oscillations, One
Each oscillation is called a_______ and frequency is measured
in_______ per second or_______. - ....ANSWER ...-Cycle,
Cycles, Hertz(Hz)
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
,Radio waves travel at the speed of_______. - ....ANSWER ...-
Light
A_______ wave is necessary to transmit radio waves and antennas are
usually_______ to _______ the length of the transmitted wave. -
....ANSWER ...-Carrier, one-quarter to one-half
In order to transmit information, the_______ wave must be altered in
some way and this alteration is called_______. - ....ANSWER ...-
Carrier, modulation
There are two ways a radio carrier wave may be modulated; these are: -
....ANSWER ...-Amplitude Modulation, Frequency Modulation
_______ waves bounce off the ionosphere and can be used to
achieve_______-_______ radio transmissions. - ....ANSWER ...-
Sky, long-range
The three basic functions of every radio transmitter are: -
....ANSWER ...-A. Generate a signal at the correct frequency, B.
Modulate the carrier wave, C.Amplify the signal
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
, The component that generates the carrier wave at the correct frequency
is called_______. - ....ANSWER ...-Oscillator
A component found in both transmitter and receivers whose function is
to increase the strength of signal is called a_______. -
....ANSWER ...-Amplifier
The length of a transmitting antenna is determined by the
frequency(wavelength) for which the antenna is used. The higher the
frequency, the_______ the antenna. - ....ANSWER ...-Shorter
A half-wave antenna may also be referred to as a_______ antenna. -
....ANSWER ...-Hertz dipole
The metal surrounding the base of a Marconi monopole antenna is
called the_______. - ....ANSWER ...-Ground plane
Aircraft VHF communications antennas are_______ polarized. -
....ANSWER ...-Vertically
A_______ circuit is used to isolate the desired frequency from all the
frequencies intercepted by an antenna. - ....ANSWER ...-Tuning
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 3
EXAM 2025 QUESTIONS AND
ANSWERS
Two types of fields exist in a radio transmitting antenna to cause it to
radiate electrical energy. They are: - ....ANSWER ...-An electric
field, A magnetic field
The higher the frequency, the_______ the wavelength. -
....ANSWER ...-Shorter
The frequency of a radio transmission indicates the number of
electromagnetic field_______ that occur in_____ second. -
....ANSWER ...-Oscillations, One
Each oscillation is called a_______ and frequency is measured
in_______ per second or_______. - ....ANSWER ...-Cycle,
Cycles, Hertz(Hz)
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
,Radio waves travel at the speed of_______. - ....ANSWER ...-
Light
A_______ wave is necessary to transmit radio waves and antennas are
usually_______ to _______ the length of the transmitted wave. -
....ANSWER ...-Carrier, one-quarter to one-half
In order to transmit information, the_______ wave must be altered in
some way and this alteration is called_______. - ....ANSWER ...-
Carrier, modulation
There are two ways a radio carrier wave may be modulated; these are: -
....ANSWER ...-Amplitude Modulation, Frequency Modulation
_______ waves bounce off the ionosphere and can be used to
achieve_______-_______ radio transmissions. - ....ANSWER ...-
Sky, long-range
The three basic functions of every radio transmitter are: -
....ANSWER ...-A. Generate a signal at the correct frequency, B.
Modulate the carrier wave, C.Amplify the signal
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
, The component that generates the carrier wave at the correct frequency
is called_______. - ....ANSWER ...-Oscillator
A component found in both transmitter and receivers whose function is
to increase the strength of signal is called a_______. -
....ANSWER ...-Amplifier
The length of a transmitting antenna is determined by the
frequency(wavelength) for which the antenna is used. The higher the
frequency, the_______ the antenna. - ....ANSWER ...-Shorter
A half-wave antenna may also be referred to as a_______ antenna. -
....ANSWER ...-Hertz dipole
The metal surrounding the base of a Marconi monopole antenna is
called the_______. - ....ANSWER ...-Ground plane
Aircraft VHF communications antennas are_______ polarized. -
....ANSWER ...-Vertically
A_______ circuit is used to isolate the desired frequency from all the
frequencies intercepted by an antenna. - ....ANSWER ...-Tuning
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 3
